Every good commute calls for a good playlist. Forget long waits for Metro trains, crowded jostling on the cars, walks that seem endless, and the bus stops to what feel like nowhere — this weekend, just sit back and enjoy the songs on your iPod or MP3 player. The right song kills all the travel stress, and in honor of that fact, TBD's On Foot blog offers you a weekly transit-themed track for your Metro playlist. The destination will come eventually, after all. In the meantime, just enjoy the ride and the music.